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Finding the Fourth Proportional to 70,510.47, 105,775.57 and 20,594.22

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Solution

The fourth proportional to 70,510.47, 105,775.57 and 20,594.22 is: 30,894.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,510.47 : 105,775.57 = 20,594.22 : x
  2. Step 2: Convert to fraction form
    70,510.47/105,775.57 = 20,594.22/x
  3. Step 3: Cross multiply
    70,510.47x = 105,775.57 × 20,594.22
  4. Step 4: Simplify right side
    70,510.47x = 2,178,364,988.29
  5. Step 5: Solve for x
    x = 2,178,364,988.29/70,510.47
  6. Step 6: Final answer
    x = 30,894.21

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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.