Home / 85,510.31-118,037.52-76,542.30

Finding the Fourth Proportional to 85,510.31, 118,037.52 and 76,542.30

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Solution

The fourth proportional to 85,510.31, 118,037.52 and 76,542.30 is: 105,658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,510.31 : 118,037.52 = 76,542.30 : x
  2. Step 2: Convert to fraction form
    85,510.31/118,037.52 = 76,542.30/x
  3. Step 3: Cross multiply
    85,510.31x = 118,037.52 × 76,542.30
  4. Step 4: Simplify right side
    85,510.31x = 9,034,863,267.10
  5. Step 5: Solve for x
    x = 9,034,863,267.10/85,510.31
  6. Step 6: Final answer
    x = 105,658.18

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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.