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Finding the Fourth Proportional to 88,222.96, 121,762.20 and 64,428.40

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Solution

The fourth proportional to 88,222.96, 121,762.20 and 64,428.40 is: 88,921.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,222.96 : 121,762.20 = 64,428.40 : x
  2. Step 2: Convert to fraction form
    88,222.96/121,762.20 = 64,428.40/x
  3. Step 3: Cross multiply
    88,222.96x = 121,762.20 × 64,428.40
  4. Step 4: Simplify right side
    88,222.96x = 7,844,943,726.48
  5. Step 5: Solve for x
    x = 7,844,943,726.48/88,222.96
  6. Step 6: Final answer
    x = 88,921.79

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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.