Home / 85,500,490.60-128,330,915.10-45,139,940.20

Finding the Fourth Proportional to 85,500,490.60, 128,330,915.10 and 45,139,940.20

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Solution

The fourth proportional to 85,500,490.60, 128,330,915.10 and 45,139,940.20 is: 67,752,240.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,500,490.60 : 128,330,915.10 = 45,139,940.20 : x
  2. Step 2: Convert to fraction form
    85,500,490.60/128,330,915.10 = 45,139,940.20/x
  3. Step 3: Cross multiply
    85,500,490.60x = 128,330,915.10 × 45,139,940.20
  4. Step 4: Simplify right side
    85,500,490.60x = 5,792,849,833,425,277
  5. Step 5: Solve for x
    x = 5,792,849,833,425,277/85,500,490.60
  6. Step 6: Final answer
    x = 67,752,240.87

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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.