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Finding the Fourth Proportional to 70,073.40, 105,088.86 and 25,703.76

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Solution

The fourth proportional to 70,073.40, 105,088.86 and 25,703.76 is: 38,547.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,073.40 : 105,088.86 = 25,703.76 : x
  2. Step 2: Convert to fraction form
    70,073.40/105,088.86 = 25,703.76/x
  3. Step 3: Cross multiply
    70,073.40x = 105,088.86 × 25,703.76
  4. Step 4: Simplify right side
    70,073.40x = 2,701,178,836.11
  5. Step 5: Solve for x
    x = 2,701,178,836.11/70,073.40
  6. Step 6: Final answer
    x = 38,547.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.