Home / 90,386.76-124,691.54-56,871.24

Finding the Fourth Proportional to 90,386.76, 124,691.54 and 56,871.24

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Solution

The fourth proportional to 90,386.76, 124,691.54 and 56,871.24 is: 78,455.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,386.76 : 124,691.54 = 56,871.24 : x
  2. Step 2: Convert to fraction form
    90,386.76/124,691.54 = 56,871.24/x
  3. Step 3: Cross multiply
    90,386.76x = 124,691.54 × 56,871.24
  4. Step 4: Simplify right side
    90,386.76x = 7,091,362,497.31
  5. Step 5: Solve for x
    x = 7,091,362,497.31/90,386.76
  6. Step 6: Final answer
    x = 78,455.77

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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.