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Finding the Fourth Proportional to 56,603.60, 78,114.60 and 32,728.16

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Solution

The fourth proportional to 56,603.60, 78,114.60 and 32,728.16 is: 45,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,603.60 : 78,114.60 = 32,728.16 : x
  2. Step 2: Convert to fraction form
    56,603.60/78,114.60 = 32,728.16/x
  3. Step 3: Cross multiply
    56,603.60x = 78,114.60 × 32,728.16
  4. Step 4: Simplify right side
    56,603.60x = 2,556,547,127.14
  5. Step 5: Solve for x
    x = 2,556,547,127.14/56,603.60
  6. Step 6: Final answer
    x = 45,165.80

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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.