Home / 85,536,031.60-128,304,047.40-40,102,418.80

Finding the Fourth Proportional to 85,536,031.60, 128,304,047.40 and 40,102,418.80

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Solution

The fourth proportional to 85,536,031.60, 128,304,047.40 and 40,102,418.80 is: 60,153,628.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,031.60 : 128,304,047.40 = 40,102,418.80 : x
  2. Step 2: Convert to fraction form
    85,536,031.60/128,304,047.40 = 40,102,418.80/x
  3. Step 3: Cross multiply
    85,536,031.60x = 128,304,047.40 × 40,102,418.80
  4. Step 4: Simplify right side
    85,536,031.60x = 5,145,302,642,569,851
  5. Step 5: Solve for x
    x = 5,145,302,642,569,851/85,536,031.60
  6. Step 6: Final answer
    x = 60,153,628.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.