Home / 78,222.14-107,916.02-51,030.20

Finding the Fourth Proportional to 78,222.14, 107,916.02 and 51,030.20

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Solution

The fourth proportional to 78,222.14, 107,916.02 and 51,030.20 is: 70,401.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,222.14 : 107,916.02 = 51,030.20 : x
  2. Step 2: Convert to fraction form
    78,222.14/107,916.02 = 51,030.20/x
  3. Step 3: Cross multiply
    78,222.14x = 107,916.02 × 51,030.20
  4. Step 4: Simplify right side
    78,222.14x = 5,506,975,289.07
  5. Step 5: Solve for x
    x = 5,506,975,289.07/78,222.14
  6. Step 6: Final answer
    x = 70,401.75

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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.