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Finding the Fourth Proportional to 70,768.86, 97,579.20 and 56,417.46

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Solution

The fourth proportional to 70,768.86, 97,579.20 and 56,417.46 is: 77,790.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,768.86 : 97,579.20 = 56,417.46 : x
  2. Step 2: Convert to fraction form
    70,768.86/97,579.20 = 56,417.46/x
  3. Step 3: Cross multiply
    70,768.86x = 97,579.20 × 56,417.46
  4. Step 4: Simplify right side
    70,768.86x = 5,505,170,612.83
  5. Step 5: Solve for x
    x = 5,505,170,612.83/70,768.86
  6. Step 6: Final answer
    x = 77,790.86

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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.