Home / 78,968,955.60-118,378,783.80-46,645,678.80

Finding the Fourth Proportional to 78,968,955.60, 118,378,783.80 and 46,645,678.80

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Solution

The fourth proportional to 78,968,955.60, 118,378,783.80 and 46,645,678.80 is: 69,924,423.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,968,955.60 : 118,378,783.80 = 46,645,678.80 : x
  2. Step 2: Convert to fraction form
    78,968,955.60/118,378,783.80 = 46,645,678.80/x
  3. Step 3: Cross multiply
    78,968,955.60x = 118,378,783.80 × 46,645,678.80
  4. Step 4: Simplify right side
    78,968,955.60x = 5,521,858,725,869,443
  5. Step 5: Solve for x
    x = 5,521,858,725,869,443/78,968,955.60
  6. Step 6: Final answer
    x = 69,924,423.89

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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.