Home / 78,417.24-108,214.45-42,607.81

Finding the Fourth Proportional to 78,417.24, 108,214.45 and 42,607.81

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Solution

The fourth proportional to 78,417.24, 108,214.45 and 42,607.81 is: 58,798.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417.24 : 108,214.45 = 42,607.81 : x
  2. Step 2: Convert to fraction form
    78,417.24/108,214.45 = 42,607.81/x
  3. Step 3: Cross multiply
    78,417.24x = 108,214.45 × 42,607.81
  4. Step 4: Simplify right side
    78,417.24x = 4,610,780,724.85
  5. Step 5: Solve for x
    x = 4,610,780,724.85/78,417.24
  6. Step 6: Final answer
    x = 58,798.05

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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.