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Finding the Fourth Proportional to 101,746.57, 140,410.28 and 56,431.48

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Solution

The fourth proportional to 101,746.57, 140,410.28 and 56,431.48 is: 77,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,746.57 : 140,410.28 = 56,431.48 : x
  2. Step 2: Convert to fraction form
    101,746.57/140,410.28 = 56,431.48/x
  3. Step 3: Cross multiply
    101,746.57x = 140,410.28 × 56,431.48
  4. Step 4: Simplify right side
    101,746.57x = 7,923,559,625.46
  5. Step 5: Solve for x
    x = 7,923,559,625.46/101,746.57
  6. Step 6: Final answer
    x = 77,875.45

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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.