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Finding the Fourth Proportional to 88,009.60, 121,374.48 and 69,113.92

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Solution

The fourth proportional to 88,009.60, 121,374.48 and 69,113.92 is: 95,315.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,009.60 : 121,374.48 = 69,113.92 : x
  2. Step 2: Convert to fraction form
    88,009.60/121,374.48 = 69,113.92/x
  3. Step 3: Cross multiply
    88,009.60x = 121,374.48 × 69,113.92
  4. Step 4: Simplify right side
    88,009.60x = 8,388,666,100.76
  5. Step 5: Solve for x
    x = 8,388,666,100.76/88,009.60
  6. Step 6: Final answer
    x = 95,315.35

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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.