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Finding the Fourth Proportional to 85,368.68, 128,020.20 and 58,993.46

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Solution

The fourth proportional to 85,368.68, 128,020.20 and 58,993.46 is: 88,467.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,368.68 : 128,020.20 = 58,993.46 : x
  2. Step 2: Convert to fraction form
    85,368.68/128,020.20 = 58,993.46/x
  3. Step 3: Cross multiply
    85,368.68x = 128,020.20 × 58,993.46
  4. Step 4: Simplify right side
    85,368.68x = 7,552,354,547.89
  5. Step 5: Solve for x
    x = 7,552,354,547.89/85,368.68
  6. Step 6: Final answer
    x = 88,467.51

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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.