Home / 98,790.92-136,328.80-56,348.56

Finding the Fourth Proportional to 98,790.92, 136,328.80 and 56,348.56

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Solution

The fourth proportional to 98,790.92, 136,328.80 and 56,348.56 is: 77,759.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,790.92 : 136,328.80 = 56,348.56 : x
  2. Step 2: Convert to fraction form
    98,790.92/136,328.80 = 56,348.56/x
  3. Step 3: Cross multiply
    98,790.92x = 136,328.80 × 56,348.56
  4. Step 4: Simplify right side
    98,790.92x = 7,681,931,566.53
  5. Step 5: Solve for x
    x = 7,681,931,566.53/98,790.92
  6. Step 6: Final answer
    x = 77,759.49

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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.