Home / 98,928.28-136,518.04-56,478.52

Finding the Fourth Proportional to 98,928.28, 136,518.04 and 56,478.52

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Solution

The fourth proportional to 98,928.28, 136,518.04 and 56,478.52 is: 77,938.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,928.28 : 136,518.04 = 56,478.52 : x
  2. Step 2: Convert to fraction form
    98,928.28/136,518.04 = 56,478.52/x
  3. Step 3: Cross multiply
    98,928.28x = 136,518.04 × 56,478.52
  4. Step 4: Simplify right side
    98,928.28x = 7,710,336,852.50
  5. Step 5: Solve for x
    x = 7,710,336,852.50/98,928.28
  6. Step 6: Final answer
    x = 77,938.65

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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.