Home / 72,585.06-108,336.68-70,813.86

Finding the Fourth Proportional to 72,585.06, 108,336.68 and 70,813.86

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Solution

The fourth proportional to 72,585.06, 108,336.68 and 70,813.86 is: 105,693.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,585.06 : 108,336.68 = 70,813.86 : x
  2. Step 2: Convert to fraction form
    72,585.06/108,336.68 = 70,813.86/x
  3. Step 3: Cross multiply
    72,585.06x = 108,336.68 × 70,813.86
  4. Step 4: Simplify right side
    72,585.06x = 7,671,738,136.32
  5. Step 5: Solve for x
    x = 7,671,738,136.32/72,585.06
  6. Step 6: Final answer
    x = 105,693.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.