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Finding the Fourth Proportional to 72,484.61, 100,028.75 and 40,653.50

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Solution

The fourth proportional to 72,484.61, 100,028.75 and 40,653.50 is: 56,101.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,484.61 : 100,028.75 = 40,653.50 : x
  2. Step 2: Convert to fraction form
    72,484.61/100,028.75 = 40,653.50/x
  3. Step 3: Cross multiply
    72,484.61x = 100,028.75 × 40,653.50
  4. Step 4: Simplify right side
    72,484.61x = 4,066,518,084.71
  5. Step 5: Solve for x
    x = 4,066,518,084.71/72,484.61
  6. Step 6: Final answer
    x = 56,101.82

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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.