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Finding the Fourth Proportional to 42,000.90, 63,390.26 and 42,000.90

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Solution

The fourth proportional to 42,000.90, 63,390.26 and 42,000.90 is: 63,390.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,000.90 : 63,390.26 = 42,000.90 : x
  2. Step 2: Convert to fraction form
    42,000.90/63,390.26 = 42,000.90/x
  3. Step 3: Cross multiply
    42,000.90x = 63,390.26 × 42,000.90
  4. Step 4: Simplify right side
    42,000.90x = 2,662,447,761.23
  5. Step 5: Solve for x
    x = 2,662,447,761.23/42,000.90
  6. Step 6: Final answer
    x = 63,390.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.