Home / 85,374.48-128,127.04-38,660.16

Finding the Fourth Proportional to 85,374.48, 128,127.04 and 38,660.16

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Solution

The fourth proportional to 85,374.48, 128,127.04 and 38,660.16 is: 58,019.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,374.48 : 128,127.04 = 38,660.16 : x
  2. Step 2: Convert to fraction form
    85,374.48/128,127.04 = 38,660.16/x
  3. Step 3: Cross multiply
    85,374.48x = 128,127.04 × 38,660.16
  4. Step 4: Simplify right side
    85,374.48x = 4,953,411,866.73
  5. Step 5: Solve for x
    x = 4,953,411,866.73/85,374.48
  6. Step 6: Final answer
    x = 58,019.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.