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Finding the Fourth Proportional to 98,915.58, 136,550.66 and 56,465.91

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Solution

The fourth proportional to 98,915.58, 136,550.66 and 56,465.91 is: 77,949.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,915.58 : 136,550.66 = 56,465.91 : x
  2. Step 2: Convert to fraction form
    98,915.58/136,550.66 = 56,465.91/x
  3. Step 3: Cross multiply
    98,915.58x = 136,550.66 × 56,465.91
  4. Step 4: Simplify right side
    98,915.58x = 7,710,456,995.67
  5. Step 5: Solve for x
    x = 7,710,456,995.67/98,915.58
  6. Step 6: Final answer
    x = 77,949.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.