Home / 70,046,085.40-105,069,128.10-66,077,992.60

Finding the Fourth Proportional to 70,046,085.40, 105,069,128.10 and 66,077,992.60

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Solution

The fourth proportional to 70,046,085.40, 105,069,128.10 and 66,077,992.60 is: 99,116,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,046,085.40 : 105,069,128.10 = 66,077,992.60 : x
  2. Step 2: Convert to fraction form
    70,046,085.40/105,069,128.10 = 66,077,992.60/x
  3. Step 3: Cross multiply
    70,046,085.40x = 105,069,128.10 × 66,077,992.60
  4. Step 4: Simplify right side
    70,046,085.40x = 6,942,757,069,080,252
  5. Step 5: Solve for x
    x = 6,942,757,069,080,252/70,046,085.40
  6. Step 6: Final answer
    x = 99,116,988.90

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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.