Home / 70,988.32-97,960.35-39,156.40

Finding the Fourth Proportional to 70,988.32, 97,960.35 and 39,156.40

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Solution

The fourth proportional to 70,988.32, 97,960.35 and 39,156.40 is: 54,033.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,988.32 : 97,960.35 = 39,156.40 : x
  2. Step 2: Convert to fraction form
    70,988.32/97,960.35 = 39,156.40/x
  3. Step 3: Cross multiply
    70,988.32x = 97,960.35 × 39,156.40
  4. Step 4: Simplify right side
    70,988.32x = 3,835,774,648.74
  5. Step 5: Solve for x
    x = 3,835,774,648.74/70,988.32
  6. Step 6: Final answer
    x = 54,033.88

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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.