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Finding the Fourth Proportional to 70,877.61, 97,808.19 and 38,611.58

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Solution

The fourth proportional to 70,877.61, 97,808.19 and 38,611.58 is: 53,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,877.61 : 97,808.19 = 38,611.58 : x
  2. Step 2: Convert to fraction form
    70,877.61/97,808.19 = 38,611.58/x
  3. Step 3: Cross multiply
    70,877.61x = 97,808.19 × 38,611.58
  4. Step 4: Simplify right side
    70,877.61x = 3,776,528,779.57
  5. Step 5: Solve for x
    x = 3,776,528,779.57/70,877.61
  6. Step 6: Final answer
    x = 53,282.40

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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.