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Finding the Fourth Proportional to 102,554.40, 153,831.60 and 43,374.72

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Solution

The fourth proportional to 102,554.40, 153,831.60 and 43,374.72 is: 65,062.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,554.40 : 153,831.60 = 43,374.72 : x
  2. Step 2: Convert to fraction form
    102,554.40/153,831.60 = 43,374.72/x
  3. Step 3: Cross multiply
    102,554.40x = 153,831.60 × 43,374.72
  4. Step 4: Simplify right side
    102,554.40x = 6,672,402,577.15
  5. Step 5: Solve for x
    x = 6,672,402,577.15/102,554.40
  6. Step 6: Final answer
    x = 65,062.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.