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Finding the Fourth Proportional to 79,570.68, 109,803.78 and 43,762.20

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Solution

The fourth proportional to 79,570.68, 109,803.78 and 43,762.20 is: 60,389.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,570.68 : 109,803.78 = 43,762.20 : x
  2. Step 2: Convert to fraction form
    79,570.68/109,803.78 = 43,762.20/x
  3. Step 3: Cross multiply
    79,570.68x = 109,803.78 × 43,762.20
  4. Step 4: Simplify right side
    79,570.68x = 4,805,254,981.12
  5. Step 5: Solve for x
    x = 4,805,254,981.12/79,570.68
  6. Step 6: Final answer
    x = 60,389.77

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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.