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Finding the Fourth Proportional to 53,159.72, 79,323.10 and 47,574.68

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Solution

The fourth proportional to 53,159.72, 79,323.10 and 47,574.68 is: 70,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,159.72 : 79,323.10 = 47,574.68 : x
  2. Step 2: Convert to fraction form
    53,159.72/79,323.10 = 47,574.68/x
  3. Step 3: Cross multiply
    53,159.72x = 79,323.10 × 47,574.68
  4. Step 4: Simplify right side
    53,159.72x = 3,773,771,099.11
  5. Step 5: Solve for x
    x = 3,773,771,099.11/53,159.72
  6. Step 6: Final answer
    x = 70,989.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.