Home / 51,885.61-77,780.55-20,317.17

Finding the Fourth Proportional to 51,885.61, 77,780.55 and 20,317.17

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Solution

The fourth proportional to 51,885.61, 77,780.55 and 20,317.17 is: 30,457.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,885.61 : 77,780.55 = 20,317.17 : x
  2. Step 2: Convert to fraction form
    51,885.61/77,780.55 = 20,317.17/x
  3. Step 3: Cross multiply
    51,885.61x = 77,780.55 × 20,317.17
  4. Step 4: Simplify right side
    51,885.61x = 1,580,281,024.91
  5. Step 5: Solve for x
    x = 1,580,281,024.91/51,885.61
  6. Step 6: Final answer
    x = 30,457.02

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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.