Home / 86,569.60-129,854.40-39,913.60

Finding the Fourth Proportional to 86,569.60, 129,854.40 and 39,913.60

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Solution

The fourth proportional to 86,569.60, 129,854.40 and 39,913.60 is: 59,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.60 : 129,854.40 = 39,913.60 : x
  2. Step 2: Convert to fraction form
    86,569.60/129,854.40 = 39,913.60/x
  3. Step 3: Cross multiply
    86,569.60x = 129,854.40 × 39,913.60
  4. Step 4: Simplify right side
    86,569.60x = 5,182,956,579.84
  5. Step 5: Solve for x
    x = 5,182,956,579.84/86,569.60
  6. Step 6: Final answer
    x = 59,870.40

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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.