Home / 78,918,203.40-118,374,636.96-27,798,886.32

Finding the Fourth Proportional to 78,918,203.40, 118,374,636.96 and 27,798,886.32

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Solution

The fourth proportional to 78,918,203.40, 118,374,636.96 and 27,798,886.32 is: 41,697,389.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918,203.40 : 118,374,636.96 = 27,798,886.32 : x
  2. Step 2: Convert to fraction form
    78,918,203.40/118,374,636.96 = 27,798,886.32/x
  3. Step 3: Cross multiply
    78,918,203.40x = 118,374,636.96 × 27,798,886.32
  4. Step 4: Simplify right side
    78,918,203.40x = 3,290,683,076,022,310
  5. Step 5: Solve for x
    x = 3,290,683,076,022,310/78,918,203.40
  6. Step 6: Final answer
    x = 41,697,389.63

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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.