Home / 78,894,622.60-118,285,946.70-30,353,720.20

Finding the Fourth Proportional to 78,894,622.60, 118,285,946.70 and 30,353,720.20

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Solution

The fourth proportional to 78,894,622.60, 118,285,946.70 and 30,353,720.20 is: 45,509,039.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,622.60 : 118,285,946.70 = 30,353,720.20 : x
  2. Step 2: Convert to fraction form
    78,894,622.60/118,285,946.70 = 30,353,720.20/x
  3. Step 3: Cross multiply
    78,894,622.60x = 118,285,946.70 × 30,353,720.20
  4. Step 4: Simplify right side
    78,894,622.60x = 3,590,418,529,723,913.50
  5. Step 5: Solve for x
    x = 3,590,418,529,723,913.50/78,894,622.60
  6. Step 6: Final answer
    x = 45,509,039.92

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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.