Home / 91,108.77-136,702.63-48,939.65

Finding the Fourth Proportional to 91,108.77, 136,702.63 and 48,939.65

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Solution

The fourth proportional to 91,108.77, 136,702.63 and 48,939.65 is: 73,430.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,108.77 : 136,702.63 = 48,939.65 : x
  2. Step 2: Convert to fraction form
    91,108.77/136,702.63 = 48,939.65/x
  3. Step 3: Cross multiply
    91,108.77x = 136,702.63 × 48,939.65
  4. Step 4: Simplify right side
    91,108.77x = 6,690,178,621.58
  5. Step 5: Solve for x
    x = 6,690,178,621.58/91,108.77
  6. Step 6: Final answer
    x = 73,430.68

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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.