Home / 78,148.29-107,844.51-42,339.21

Finding the Fourth Proportional to 78,148.29, 107,844.51 and 42,339.21

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Solution

The fourth proportional to 78,148.29, 107,844.51 and 42,339.21 is: 58,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,148.29 : 107,844.51 = 42,339.21 : x
  2. Step 2: Convert to fraction form
    78,148.29/107,844.51 = 42,339.21/x
  3. Step 3: Cross multiply
    78,148.29x = 107,844.51 × 42,339.21
  4. Step 4: Simplify right side
    78,148.29x = 4,566,051,356.24
  5. Step 5: Solve for x
    x = 4,566,051,356.24/78,148.29
  6. Step 6: Final answer
    x = 58,428.04

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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.