Home / 78,391,329.78-108,186,088.05-47,030,554.74

Finding the Fourth Proportional to 78,391,329.78, 108,186,088.05 and 47,030,554.74

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Solution

The fourth proportional to 78,391,329.78, 108,186,088.05 and 47,030,554.74 is: 64,905,796.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,391,329.78 : 108,186,088.05 = 47,030,554.74 : x
  2. Step 2: Convert to fraction form
    78,391,329.78/108,186,088.05 = 47,030,554.74/x
  3. Step 3: Cross multiply
    78,391,329.78x = 108,186,088.05 × 47,030,554.74
  4. Step 4: Simplify right side
    78,391,329.78x = 5,088,051,736,141,985
  5. Step 5: Solve for x
    x = 5,088,051,736,141,985/78,391,329.78
  6. Step 6: Final answer
    x = 64,905,796.99

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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.