Home / 91,768.34-137,639.55-29,430.74

Finding the Fourth Proportional to 91,768.34, 137,639.55 and 29,430.74

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Solution

The fourth proportional to 91,768.34, 137,639.55 and 29,430.74 is: 44,141.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,768.34 : 137,639.55 = 29,430.74 : x
  2. Step 2: Convert to fraction form
    91,768.34/137,639.55 = 29,430.74/x
  3. Step 3: Cross multiply
    91,768.34x = 137,639.55 × 29,430.74
  4. Step 4: Simplify right side
    91,768.34x = 4,050,833,809.77
  5. Step 5: Solve for x
    x = 4,050,833,809.77/91,768.34
  6. Step 6: Final answer
    x = 44,141.95

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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.