Home / 58,315.84-80,382.72-39,420.16

Finding the Fourth Proportional to 58,315.84, 80,382.72 and 39,420.16

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Solution

The fourth proportional to 58,315.84, 80,382.72 and 39,420.16 is: 54,336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,315.84 : 80,382.72 = 39,420.16 : x
  2. Step 2: Convert to fraction form
    58,315.84/80,382.72 = 39,420.16/x
  3. Step 3: Cross multiply
    58,315.84x = 80,382.72 × 39,420.16
  4. Step 4: Simplify right side
    58,315.84x = 3,168,699,683.64
  5. Step 5: Solve for x
    x = 3,168,699,683.64/58,315.84
  6. Step 6: Final answer
    x = 54,336.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.