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Finding the Fourth Proportional to 60,499.40, 90,749.10 and 18,946.40

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Solution

The fourth proportional to 60,499.40, 90,749.10 and 18,946.40 is: 28,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,499.40 : 90,749.10 = 18,946.40 : x
  2. Step 2: Convert to fraction form
    60,499.40/90,749.10 = 18,946.40/x
  3. Step 3: Cross multiply
    60,499.40x = 90,749.10 × 18,946.40
  4. Step 4: Simplify right side
    60,499.40x = 1,719,368,748.24
  5. Step 5: Solve for x
    x = 1,719,368,748.24/60,499.40
  6. Step 6: Final answer
    x = 28,419.60

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1.5x scale

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.