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Finding the Fourth Proportional to 84,377.76, 116,415 and 56,088.24

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Solution

The fourth proportional to 84,377.76, 116,415 and 56,088.24 is: 77,384.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,377.76 : 116,415 = 56,088.24 : x
  2. Step 2: Convert to fraction form
    84,377.76/116,415 = 56,088.24/x
  3. Step 3: Cross multiply
    84,377.76x = 116,415 × 56,088.24
  4. Step 4: Simplify right side
    84,377.76x = 6,529,512,459.60
  5. Step 5: Solve for x
    x = 6,529,512,459.60/84,377.76
  6. Step 6: Final answer
    x = 77,384.28

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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.