Home / 74,001.60-102,124.80-42,165.36

Finding the Fourth Proportional to 74,001.60, 102,124.80 and 42,165.36

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Solution

The fourth proportional to 74,001.60, 102,124.80 and 42,165.36 is: 58,189.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,001.60 : 102,124.80 = 42,165.36 : x
  2. Step 2: Convert to fraction form
    74,001.60/102,124.80 = 42,165.36/x
  3. Step 3: Cross multiply
    74,001.60x = 102,124.80 × 42,165.36
  4. Step 4: Simplify right side
    74,001.60x = 4,306,128,956.93
  5. Step 5: Solve for x
    x = 4,306,128,956.93/74,001.60
  6. Step 6: Final answer
    x = 58,189.67

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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.