Home / 88,138.52-121,547.78-57,870.44

Finding the Fourth Proportional to 88,138.52, 121,547.78 and 57,870.44

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Solution

The fourth proportional to 88,138.52, 121,547.78 and 57,870.44 is: 79,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,138.52 : 121,547.78 = 57,870.44 : x
  2. Step 2: Convert to fraction form
    88,138.52/121,547.78 = 57,870.44/x
  3. Step 3: Cross multiply
    88,138.52x = 121,547.78 × 57,870.44
  4. Step 4: Simplify right side
    88,138.52x = 7,034,023,509.62
  5. Step 5: Solve for x
    x = 7,034,023,509.62/88,138.52
  6. Step 6: Final answer
    x = 79,806.46

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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.