Home / 76,780.36-105,874.02-48,089.80

Finding the Fourth Proportional to 76,780.36, 105,874.02 and 48,089.80

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Solution

The fourth proportional to 76,780.36, 105,874.02 and 48,089.80 is: 66,312.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,780.36 : 105,874.02 = 48,089.80 : x
  2. Step 2: Convert to fraction form
    76,780.36/105,874.02 = 48,089.80/x
  3. Step 3: Cross multiply
    76,780.36x = 105,874.02 × 48,089.80
  4. Step 4: Simplify right side
    76,780.36x = 5,091,460,447.00
  5. Step 5: Solve for x
    x = 5,091,460,447.00/76,780.36
  6. Step 6: Final answer
    x = 66,312.02

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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.