Home / 81,005.04-121,306.68-56,070

Finding the Fourth Proportional to 81,005.04, 121,306.68 and 56,070

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Solution

The fourth proportional to 81,005.04, 121,306.68 and 56,070 is: 83,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005.04 : 121,306.68 = 56,070 : x
  2. Step 2: Convert to fraction form
    81,005.04/121,306.68 = 56,070/x
  3. Step 3: Cross multiply
    81,005.04x = 121,306.68 × 56,070
  4. Step 4: Simplify right side
    81,005.04x = 6,801,665,547.60
  5. Step 5: Solve for x
    x = 6,801,665,547.60/81,005.04
  6. Step 6: Final answer
    x = 83,965.96

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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.