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Finding the Fourth Proportional to 93,315.88, 128,777.70 and 50,876.20

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Solution

The fourth proportional to 93,315.88, 128,777.70 and 50,876.20 is: 70,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,315.88 : 128,777.70 = 50,876.20 : x
  2. Step 2: Convert to fraction form
    93,315.88/128,777.70 = 50,876.20/x
  3. Step 3: Cross multiply
    93,315.88x = 128,777.70 × 50,876.20
  4. Step 4: Simplify right side
    93,315.88x = 6,551,720,020.74
  5. Step 5: Solve for x
    x = 6,551,720,020.74/93,315.88
  6. Step 6: Final answer
    x = 70,210.13

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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.