Home / 91,400.72-137,045.70-59,772.59

Finding the Fourth Proportional to 91,400.72, 137,045.70 and 59,772.59

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Solution

The fourth proportional to 91,400.72, 137,045.70 and 59,772.59 is: 89,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,400.72 : 137,045.70 = 59,772.59 : x
  2. Step 2: Convert to fraction form
    91,400.72/137,045.70 = 59,772.59/x
  3. Step 3: Cross multiply
    91,400.72x = 137,045.70 × 59,772.59
  4. Step 4: Simplify right side
    91,400.72x = 8,191,575,752.13
  5. Step 5: Solve for x
    x = 8,191,575,752.13/91,400.72
  6. Step 6: Final answer
    x = 89,622.67

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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.