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Finding the Fourth Proportional to 84,088.54, 115,921.60 and 66,152.40

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Solution

The fourth proportional to 84,088.54, 115,921.60 and 66,152.40 is: 91,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,088.54 : 115,921.60 = 66,152.40 : x
  2. Step 2: Convert to fraction form
    84,088.54/115,921.60 = 66,152.40/x
  3. Step 3: Cross multiply
    84,088.54x = 115,921.60 × 66,152.40
  4. Step 4: Simplify right side
    84,088.54x = 7,668,492,051.84
  5. Step 5: Solve for x
    x = 7,668,492,051.84/84,088.54
  6. Step 6: Final answer
    x = 91,195.45

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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.