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Finding the Fourth Proportional to 70,980.68, 97,953.86 and 39,148.76

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Solution

The fourth proportional to 70,980.68, 97,953.86 and 39,148.76 is: 54,025.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,980.68 : 97,953.86 = 39,148.76 : x
  2. Step 2: Convert to fraction form
    70,980.68/97,953.86 = 39,148.76/x
  3. Step 3: Cross multiply
    70,980.68x = 97,953.86 × 39,148.76
  4. Step 4: Simplify right side
    70,980.68x = 3,834,772,156.21
  5. Step 5: Solve for x
    x = 3,834,772,156.21/70,980.68
  6. Step 6: Final answer
    x = 54,025.58

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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.