Home / 42,702.38-64,053.57-20,501.90

Finding the Fourth Proportional to 42,702.38, 64,053.57 and 20,501.90

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Solution

The fourth proportional to 42,702.38, 64,053.57 and 20,501.90 is: 30,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,702.38 : 64,053.57 = 20,501.90 : x
  2. Step 2: Convert to fraction form
    42,702.38/64,053.57 = 20,501.90/x
  3. Step 3: Cross multiply
    42,702.38x = 64,053.57 × 20,501.90
  4. Step 4: Simplify right side
    42,702.38x = 1,313,219,886.78
  5. Step 5: Solve for x
    x = 1,313,219,886.78/42,702.38
  6. Step 6: Final answer
    x = 30,752.85

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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.