Home / 78,437.12-108,244.85-42,629.45

Finding the Fourth Proportional to 78,437.12, 108,244.85 and 42,629.45

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Solution

The fourth proportional to 78,437.12, 108,244.85 and 42,629.45 is: 58,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,437.12 : 108,244.85 = 42,629.45 : x
  2. Step 2: Convert to fraction form
    78,437.12/108,244.85 = 42,629.45/x
  3. Step 3: Cross multiply
    78,437.12x = 108,244.85 × 42,629.45
  4. Step 4: Simplify right side
    78,437.12x = 4,614,418,420.83
  5. Step 5: Solve for x
    x = 4,614,418,420.83/78,437.12
  6. Step 6: Final answer
    x = 58,829.52

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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.