Home / 42,255.40-63,383.10-39,663.40

Finding the Fourth Proportional to 42,255.40, 63,383.10 and 39,663.40

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Solution

The fourth proportional to 42,255.40, 63,383.10 and 39,663.40 is: 59,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,255.40 : 63,383.10 = 39,663.40 : x
  2. Step 2: Convert to fraction form
    42,255.40/63,383.10 = 39,663.40/x
  3. Step 3: Cross multiply
    42,255.40x = 63,383.10 × 39,663.40
  4. Step 4: Simplify right side
    42,255.40x = 2,513,989,248.54
  5. Step 5: Solve for x
    x = 2,513,989,248.54/42,255.40
  6. Step 6: Final answer
    x = 59,495.10

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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.