Home / 77,142.08-106,420.56-53,302.16

Finding the Fourth Proportional to 77,142.08, 106,420.56 and 53,302.16

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Solution

The fourth proportional to 77,142.08, 106,420.56 and 53,302.16 is: 73,532.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,142.08 : 106,420.56 = 53,302.16 : x
  2. Step 2: Convert to fraction form
    77,142.08/106,420.56 = 53,302.16/x
  3. Step 3: Cross multiply
    77,142.08x = 106,420.56 × 53,302.16
  4. Step 4: Simplify right side
    77,142.08x = 5,672,445,716.41
  5. Step 5: Solve for x
    x = 5,672,445,716.41/77,142.08
  6. Step 6: Final answer
    x = 73,532.44

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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.