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Finding the Fourth Proportional to 72,403.72, 108,598.02 and 28,029.40

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Solution

The fourth proportional to 72,403.72, 108,598.02 and 28,029.40 is: 42,041.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403.72 : 108,598.02 = 28,029.40 : x
  2. Step 2: Convert to fraction form
    72,403.72/108,598.02 = 28,029.40/x
  3. Step 3: Cross multiply
    72,403.72x = 108,598.02 × 28,029.40
  4. Step 4: Simplify right side
    72,403.72x = 3,043,937,341.79
  5. Step 5: Solve for x
    x = 3,043,937,341.79/72,403.72
  6. Step 6: Final answer
    x = 42,041.17

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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.