Home / 85,248,264.60-127,788,416.10-42,124,123.80

Finding the Fourth Proportional to 85,248,264.60, 127,788,416.10 and 42,124,123.80

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Solution

The fourth proportional to 85,248,264.60, 127,788,416.10 and 42,124,123.80 is: 63,144,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,264.60 : 127,788,416.10 = 42,124,123.80 : x
  2. Step 2: Convert to fraction form
    85,248,264.60/127,788,416.10 = 42,124,123.80/x
  3. Step 3: Cross multiply
    85,248,264.60x = 127,788,416.10 × 42,124,123.80
  4. Step 4: Simplify right side
    85,248,264.60x = 5,382,975,060,002,313
  5. Step 5: Solve for x
    x = 5,382,975,060,002,313/85,248,264.60
  6. Step 6: Final answer
    x = 63,144,687.87

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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.