Home / 78,045.13-107,702.27-42,235.14

Finding the Fourth Proportional to 78,045.13, 107,702.27 and 42,235.14

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Solution

The fourth proportional to 78,045.13, 107,702.27 and 42,235.14 is: 58,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,045.13 : 107,702.27 = 42,235.14 : x
  2. Step 2: Convert to fraction form
    78,045.13/107,702.27 = 42,235.14/x
  3. Step 3: Cross multiply
    78,045.13x = 107,702.27 × 42,235.14
  4. Step 4: Simplify right side
    78,045.13x = 4,548,820,398.97
  5. Step 5: Solve for x
    x = 4,548,820,398.97/78,045.13
  6. Step 6: Final answer
    x = 58,284.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.