Home / 85,688.42-128,365.23-59,029.70

Finding the Fourth Proportional to 85,688.42, 128,365.23 and 59,029.70

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Solution

The fourth proportional to 85,688.42, 128,365.23 and 59,029.70 is: 88,429.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,688.42 : 128,365.23 = 59,029.70 : x
  2. Step 2: Convert to fraction form
    85,688.42/128,365.23 = 59,029.70/x
  3. Step 3: Cross multiply
    85,688.42x = 128,365.23 × 59,029.70
  4. Step 4: Simplify right side
    85,688.42x = 7,577,361,017.33
  5. Step 5: Solve for x
    x = 7,577,361,017.33/85,688.42
  6. Step 6: Final answer
    x = 88,429.23

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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.