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Finding the Fourth Proportional to 72,009.40, 108,014.10 and 60,345.40

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Solution

The fourth proportional to 72,009.40, 108,014.10 and 60,345.40 is: 90,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,009.40 : 108,014.10 = 60,345.40 : x
  2. Step 2: Convert to fraction form
    72,009.40/108,014.10 = 60,345.40/x
  3. Step 3: Cross multiply
    72,009.40x = 108,014.10 × 60,345.40
  4. Step 4: Simplify right side
    72,009.40x = 6,518,154,070.14
  5. Step 5: Solve for x
    x = 6,518,154,070.14/72,009.40
  6. Step 6: Final answer
    x = 90,518.10

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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.