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Finding the Fourth Proportional to 98,895.95, 136,500.82 and 56,479.08

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Solution

The fourth proportional to 98,895.95, 136,500.82 and 56,479.08 is: 77,955.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,895.95 : 136,500.82 = 56,479.08 : x
  2. Step 2: Convert to fraction form
    98,895.95/136,500.82 = 56,479.08/x
  3. Step 3: Cross multiply
    98,895.95x = 136,500.82 × 56,479.08
  4. Step 4: Simplify right side
    98,895.95x = 7,709,440,591.65
  5. Step 5: Solve for x
    x = 7,709,440,591.65/98,895.95
  6. Step 6: Final answer
    x = 77,955.07

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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.