Home / 78,415,392.60-117,623,088.90-49,788,437.40

Finding the Fourth Proportional to 78,415,392.60, 117,623,088.90 and 49,788,437.40

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Solution

The fourth proportional to 78,415,392.60, 117,623,088.90 and 49,788,437.40 is: 74,682,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,415,392.60 : 117,623,088.90 = 49,788,437.40 : x
  2. Step 2: Convert to fraction form
    78,415,392.60/117,623,088.90 = 49,788,437.40/x
  3. Step 3: Cross multiply
    78,415,392.60x = 117,623,088.90 × 49,788,437.40
  4. Step 4: Simplify right side
    78,415,392.60x = 5,856,269,798,492,285
  5. Step 5: Solve for x
    x = 5,856,269,798,492,285/78,415,392.60
  6. Step 6: Final answer
    x = 74,682,656.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.